By Rosalind S. Helderman, John Wagner and Anu Narayanswamy August 19 at 10:43 PM

More than half of the Clinton Foundation’s major donors would be prevented from contributing to the charity under the self-imposed ban on corporate and foreign donors the foundation said this week it would adopt if Hillary Clinton won the White House, according to a new Washington Post analysis of foundation donations.

The findings underscore the extent to which the Clintons’ sprawling global charity has come to rely on financial support from industries and overseas interests, a point that has drawn criticism from Republicans and some liberals who have said the donations represent conflicts of interest for a potential president.

The analysis, which examined donor lists posted on the foundation’s website, found that 53 percent of the donors who have given $1 million or more to the charity are corporations or foreign citizens, groups or governments. The list includes the governments of Saudi Arabia and Australia, the British bank Barclay’s, and major U.S. companies such as Coca-Cola and ExxonMobil.

The foundation’s announcement drew skepticism Friday from the right and the left as critics wondered why the Clintons have never before cut off corporate and overseas money to their charity — and why they would wait until after the election to do so.

The restrictions would be more stringent than those put in place while Clinton was secretary of state, when the foundation was merely required to seek State Department approval to accept new donations from foreign governments — permitting the charity to accept millions of dollars from governments and wealthy interests all over the world. They would also be stricter than the policy adopted when Clinton launched her campaign that placed some limits on foreign government funding but allowed corporate and individual donations.

Nina Turner, a former Ohio state senator who was a leading surrogate for Clinton’s rival in the Democratic primary race, Sen. Bernie Sanders (Vt.), said the restrictions were a good step but should be imposed immediately.